don? >> barbara, thank you. >>> the president wants a group, headed by the vice president, to bring him recommendations on what to do about gun violence. but what will congress do with any idea they might come up with? that's next. not today. [ male announcer ] bob has afib: atrial fibrillation not caused by a heart valve problem, a condition that puts him at greater risk for a stroke. [ gps ] turn left. i don't think so. [ male announcer ] for years, bob took warfarin, and made a monthly trip to the clinic to get his blood tested. but not anymore. bob's doctor recommended a different option: once-a-day xarelto®. xarelto® is the first and only once-a-day prescription blood thinner for patients with afib not caused by a heart valve problem, that doesn't require routine blood monitoring. like warfarin, xarelto® is proven effective to reduce the risk of an afib-related stroke. there is limited data on how these drugs compare when warfarin is well managed. no routine blood monitoring means